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I thought laptop batteries are also a bunch of phone batteries stuck together. Is that assumption incorrect? Edit: apparently so.... I would appreciate a reply

• abawany 9y ago
  Not an expert and I didn't downvote but from my examination of laptop batteries, they appear to be composed of LIon cells of a standard size, something like 3V cells. Phone batteries OTOH seem to be pretty custom designs to fit a specific phone or range of phones. For e.g. https://electronics.stackexchange.com/questions/156928/replacing-18650-cells-in-laptop-battery-with-greater-capacity-ones https://electronics.stackexchange.com/questions/156928/repla... Edit: added link.
• peterwwillis 9y ago
  Phone batteries are more commonly lithium polymer, and laptop batteries are more commonly lithium ion (using 18650 cells).